Malicious PDF — malware analysis report

Static analysis result for SHA-256 57d84eede75262d4…

MALICIOUS

PDF

41.3 KB Created: 2021-05-12 14:30:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f2332ea463faee30e40965422f344a2c SHA-1: 11f9d960299cef2b5962d7d33b30801921bd06ab SHA-256: 57d84eede75262d48f54d9f7dc148890c285776e5165b985666a01eb95c6c60e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses an invoice-themed lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/479516143/minecraft-svg-images-free-game-hack PDF link annotation
    • https://www.ma-plast.hr/files/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/google-roblox-games_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/level-coin_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • https://www.ma-plast.hr/files/united-gaming-net-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-free-spins-link-deutsch-ios_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048ea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48EA 23844 bytes
SHA-256: c0d59d577e175f0b0212e90b53aa302225d690e1d417cd7c56a18f8a60740436
font_01_sfnt_off00007f3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F3E 18232 bytes
SHA-256: a09b643334d2e6be4f3f41432578bfd2746235ab347d952591db22e0a7ac2c60

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